applicationcontext

How to add a hook to the application context initialization event?

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Spring has some standard events which you can handle. To do that, you must create and register a bean that implements the ApplicationListener interface, something like this: package test.pack.age; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationEvent; import org.springframework.context.ApplicationListener; import org.springframework.context.event.ContextRefreshedEvent; public class ApplicationListenerBean implements ApplicationListener { @Override public void onApplicationEvent(ApplicationEvent event) { if (event instanceof ContextRefreshedEvent) { ApplicationContext … Read more

Spring cannot find bean xml configuration file when it does exist

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Thanks, but that was not the solution. I found it out why it wasn’t working for me. Since I’d done a declaration: ApplicationContext context = new ClassPathXmlApplicationContext(“beans.xml”); I thought I would refer to root directory of the project when beans.xml file was there. Then I put the configuration file to src/main/resources and changed initialization to: … Read more

What is the difference between ApplicationContext and WebApplicationContext in Spring MVC?

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Web Application context extended Application Context which is designed to work with the standard javax.servlet.ServletContext so it’s able to communicate with the container. public interface WebApplicationContext extends ApplicationContext { ServletContext getServletContext(); } Beans, instantiated in WebApplicationContext will also be able to use ServletContext if they implement ServletContextAware interface package org.springframework.web.context; public interface ServletContextAware extends Aware … Read more

How to change context root of a dynamic web project in Eclipse?

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I’m sure you’ve moved on by now, but I thought I’d answer anyway. Some of these answers give workarounds. What actually must happen is that you clean and re-publish your project to “activate” the new URI. This is done by right-clicking your server (in the Servers view) and choosing Clean. Then you start (or restart … Read more

Getting Spring Application Context

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If the object that needs access to the container is a bean in the container, just implement the BeanFactoryAware or ApplicationContextAware interfaces. If an object outside the container needs access to the container, I’ve used a standard GoF singleton pattern for the spring container. That way, you only have one singleton in your application, the … Read more

How to call a method after bean initialization is complete?

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To expand on the @PostConstruct suggestion in other answers, this really is the best solution, in my opinion. It keeps your code decoupled from the Spring API (@PostConstruct is in javax.*) It explicitly annotates your init method as something that needs to be called to initialize the bean You don’t need to remember to add … Read more

BeanFactory vs ApplicationContext

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The spring docs are great on this: 3.8.1. BeanFactory or ApplicationContext?. They have a table with a comparison, I’ll post a snippet: Bean Factory Bean instantiation/wiring Application Context Bean instantiation/wiring Automatic BeanPostProcessor registration Automatic BeanFactoryPostProcessor registration Convenient MessageSource access (for i18n) ApplicationEvent publication So if you need any of the points presented on the Application … Read more

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